Answer:
18
Step-by-step explanation:
4(3)=12
12+6=18
Answer:
n = 2
Step-by-step explanation:
4-2 = 2n

4 x 2 = 8
2 x 2 = 4
8 - 4 = 4
Answer:
y = 4x - 9
Step-by-step explanation:
Take 2 points:
(0,-9) and (4,7)
Find the slope:
(7 - (-9))/(4 - 0)
16/4 = 4
so we have y = 4x + b
Now find b:
Insert a point for y and x:
7 = 4(4) + b
7 = 16 + b
b = -9
y = 4x - 9
76 cents. ($0.76)
(sum of purchases = $12.16 divided by 0.0625 = .76)